The best months to visit Australia are September and May. See monthly temperatures, rainfall and rain days (1991–2020 averages) to plan your trip.
Average daytime high and monthly rainfall in Australia: January 26°C / 68mm; February 25°C / 87mm; March 24°C / 70mm; April 21°C / 54mm; May 19°C / 46mm; June 16°C / 65mm; July 16°C / 36mm; August 17°C / 37mm; September 19°C / 40mm; October 21°C / 51mm; November 23°C / 70mm; December 24°C / 56mm.